[The growth of thermophilic fungi strains Aspergillus fumigatus and Mucor lusitanicus in n-alkane medium (author's transl)].

Growth parameters of the thermophilic hydrocarbon utilizing strains Aspergillus fumigatus and Mucor lusitanicus in n-alkanes (KW)- and glucose (GIc)-medium in standing and fermenter cultures were investigated. The temperature limits for growth were dependent on the medium composition. The temperature range for sporulation was smaller than for the hyphal growth. Both strains were cultivated on carbon limitation with subsequent determinations of n-alkanes glucose, ammoniumsulfate-nitrogen, phosphate-phosphorus and the trace elements Mn, Cu, Zn and Fe. A method for estimation of hydrocarbon utilization was developed. In a medium containing a mixture of n-alkanes and glucose as C-sources the strains utilized at first glucose. Both the strains excreted monocarbon acids with a low carbon number into the culture liquid. The results were discussed.